After cupping, there will be slight damage to the skin surface, there may be tiny bleeding spots, gua sha or purple color, patients are advised to take a hot bath after 24 hours. Cupping is to use the physical effect of negative pressure to unblock the local blockage of the body, so as to achieve the effect of soothing the meridians, promoting blood circulation, relieving swelling and pain, dispelling wind and dispersing cold. As cupping will make the local pores of the body in the open state, so that local blood circulation accelerated, this time a hot bath is likely to further accelerate the blood circulation, resulting in congestion, swelling of the skin mucosa, and patients are prone to catch a cold, cold, so that the cupping effect is greatly reduced. In addition, if the local skin is broken by cupping, taking a hot bath will also cause local inflammatory reaction and increase the risk of infection. Therefore, patients need to wait until the skin breakage appears to improve and the scab has subsided before taking a hot bath. Patients are advised to avoid rubbing the skin after cupping and to take a light rinse to avoid damage to the skin.